Non-Supersymmetric T^2/Z_N and T^4/Z_N Orbifolds

TL;DR

This paper analyzes the spectra of non-supersymmetric T^2/Z_N and T^4/Z_N orbifolds in Type II and Type 0 string theories, revealing degeneracies and potential equivalences between different orbifold models.

Contribution

It provides detailed computations of tachyonic and massless spectra for these orbifolds, offering new insights into their state degeneracies and relationships.

Findings

Identified degeneracies in spectra across different orbifolds

Found pairs of Type 0 orbifolds with similar spectra

Enhanced understanding of non-supersymmetric orbifold spectra

Abstract

We compute the perturbative tachyonic and massless spectra of Type II and Type 0 string theories on non-supersymmetric T^2/Z_N orbifolds, and those on T^4/Z_N ones. Comparing the spectra with one another, we obtain insight about the degeneracy of states and find several pairs of Type 0 orbifolds which could be identified with each other.